Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts.
syzkaller login: [  721.385983][ T1662] INFO: task syz-executor776:8526 can't die for more than 143 seconds.
[  721.394467][ T1662] task:syz-executor776 state:R  running task     stack:27912 pid: 8526 ppid:  8521 flags:0x00004006
[  721.408532][ T1662] Call Trace:
[  721.411858][ T1662]  ? find_inode+0x109/0x220
[  721.417976][ T1662]  ? lock_release+0x710/0x710
[  721.422685][ T1662]  ? iget5_locked+0xcc/0x2d0
[  721.428699][ T1662]  ? _raw_spin_unlock+0x12/0x40
[  721.433598][ T1662]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.440503][ T1662]  ? fuse_init_file_inode+0x1e0/0x1e0
[  721.446829][ T1662]  ? iget5_locked+0xac/0x2d0
[  721.451448][ T1662]  ? iget5_locked+0xcc/0x2d0
[  721.457471][ T1662]  ? fuse_iget+0x271/0x610
[  721.461922][ T1662]  ? fuse_change_attributes+0x610/0x610
[  721.468909][ T1662]  ? fuse_readdir_uncached+0x11e0/0x1730
[  721.474590][ T1662]  ? fuse_emit+0xc10/0xc10
[  721.480411][ T1662]  ? lockdep_hardirqs_on_prepare+0x420/0x420
[  721.487343][ T1662]  ? __mutex_lock+0x61b/0x1110
[  721.492167][ T1662]  ? lock_release+0x710/0x710
[  721.499464][ T1662]  ? fuse_readdir+0x842/0x1830
[  721.504261][ T1662]  ? down_read_killable+0x1a4/0x4a0
[  721.510816][ T1662]  ? down_read_interruptible+0x4a0/0x4a0
[  721.518617][ T1662]  ? security_file_permission+0x304/0x560
[  721.524369][ T1662]  ? iterate_dir+0x4eb/0x660
[  721.530656][ T1662]  ? __x64_sys_getdents+0x13a/0x2b0
[  721.537016][ T1662]  ? __ia32_sys_old_readdir+0x1c0/0x1c0
[  721.542605][ T1662]  ? filldir64+0x6a0/0x6a0
[  721.548618][ T1662]  ? syscall_enter_from_user_mode+0x1d/0x50
[  721.554550][ T1662]  ? do_syscall_64+0x2d/0x70
[  721.560653][ T1662]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  721.567726][ T1662] 
[  721.567726][ T1662] Showing all locks held in the system:
[  721.575457][ T1662] 1 lock held by khungtaskd/1662:
[  721.581969][ T1662]  #0: ffffffff8b793ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c
[  721.592819][ T1662] 1 lock held by in:imklog/8203:
[  721.598580][ T1662]  #0: ffff88801178b770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[  721.608664][ T1662] 3 locks held by syz-executor776/8526:
[  721.614227][ T1662] 
[  721.619056][ T1662] =============================================
[  721.619056][ T1662] 
[  721.629754][ T1662] Kernel panic - not syncing: hung_task: blocked tasks
[  721.636616][ T1662] CPU: 0 PID: 1662 Comm: khungtaskd Not tainted 5.10.0-next-20201223-syzkaller #0
[  721.645820][ T1662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  721.655878][ T1662] Call Trace:
[  721.659185][ T1662]  dump_stack+0x107/0x163
[  721.663536][ T1662]  panic+0x343/0x77f
[  721.667465][ T1662]  ? __warn_printk+0xf3/0xf3
[  721.672079][ T1662]  ? watchdog.cold+0x146/0x31d
[  721.676873][ T1662]  watchdog.cold+0x157/0x31d
[  721.681501][ T1662]  ? trace_sched_process_hang+0x2a0/0x2a0
[  721.687254][ T1662]  kthread+0x3b1/0x4a0
[  721.691334][ T1662]  ? kthread_create_worker_on_cpu+0xf0/0xf0
[  721.697257][ T1662]  ret_from_fork+0x1f/0x30
[  721.702294][ T1662] Kernel Offset: disabled
[  721.706636][ T1662] Rebooting in 86400 seconds..